/*
 * Copyright 2020-2021, Seqera Labs
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package nextflow.sql

import groovyx.gpars.dataflow.DataflowWriteChannel
import nextflow.sql.config.SqlDataSource

/**
 * Declares core main interface for SQL query operation
 * 
 * @author Paolo Di Tommaso <paolo.ditommaso@gmail.com>
 */
interface QueryOp {

    QueryOp withStatement(String stm)
    QueryOp withTarget(DataflowWriteChannel channel)
    QueryOp withDataSource(SqlDataSource ds)

    void perform()
    void perform(boolean async)
}
